Apparatus for revivifying and for decarbonizing bone-black and other filtering media.



M. WEINHICH.

APPARATUS FOR REVIVIFYINS AND FOR DECARBONIZING BONE BLACK AND OTHER FILTERING MEDIA.

APPLICATION FILED DEC- \3. |515.

Patented May 23, 1916.

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fyi/wam M UNITED STATES PATENT OFFICE.

MORIZ WEINRICH, OF NEW YORK, N. Y.

APPARATUS FOR REVIVIFYING AND FOR DECALRBONIZING BONE-BLACK AND OTHER FILTERING MEDIA.

Application filed December 13, 1915.

To all ywhom it may concern:

Be it known that I, Monia lWmNRTmI, a citizen of the United States, residing at New `(ork city, in the county of New York and State of New York, have invented certain new and useful Improvements in Apparatus for Revivifying and for Decarbonizing Bone-lack and other Filtering Media, of which the following is a specification.

My invention relates to an apparatus for revirifying and for decarbonizing boneblack and other filtering media, and it consists of the parts, and the constructions, arrangements and combinations of parts which I will hereinafter describe and claim.

A leading object of the invention is to provide a simple and eifective apparatus for rerivifying `and for deearbonizing boneblaek and other filtering media` and, primarily, where such apparatus is used in coinbination with kiln rctorts, as generally used for the reviriiication of bone-black, or in combination with other devices, apparatus or machines, in which bone-black or other filtering media can be heated to the temperature required for the successful operation of the apparatus, which I will hereinafter describe.

For present purposes, I have shown my improvements as associated with kiln retorts, but it Will be understood that other forms of heating appliances may take. the place of the retort where this can be done and satisfactory results obtained.

In the accompanying drawings forming part of this specification and in which similar reference characters indicate like parts in the several views; Figure 1 is'a side elevation of an apparatus for revivifying and for decarbonizing bone-black and other filtering media embodying my invention. Fig. 2 is a. vertical cross sectional View of the same. Figs. 3, 4, 5 and (i are enlarged details which I will hereinafter describe.

In the aforesaid drawings the apparatus which I have invented is shown in connection with a retort kiln comprising-two or more double rows of retorts incloscd `by an appropriate brick work, A, A', and an appropriate cooling apparatus, C, C', for cooling and discharging the treated material, and the construction of which parts may be of my approved character.

In the illustrated embodiment of my in- Speoicaton of Letters Patent.

Serial No. 66,667'.

rention, I hare shown an apparatus which comprises double rows ci kiln retorts, a, fL, n?, o, &c.. there being an aggregate of about S0 retorts in the apparatus shown and which retorts are inelosed by the brick work, A, ik', and are retained abore the cooling chambers, C, C, there being a furnace, 7), of any well known and suitable character arranged sub stantially between the innermost of the double rows of retorts shown in Fig. i?, said furnace being for the purpose of heating the material contained in the retorts, to the desired degree, and the apparatus being provided willi an appropriate flue, c, through which the waste gases escape to a drier, not shown, or otherwise.

Underlying the retorts are suitable inrlosed chambers, d, which I will hereinafter refer to as distributing chambers, each of said chambers having an airtight connection with two rows of retorls, u., e', a?, a, &c., and said chambers extending substanti-all)v for the whole length of the kiln, and, in practice. each being from six to ten inches high, so that the bone-black or other filtering media. discharging from the retorts, will corel' completely the. bottom of the aforesaid chambers. The bottoni of the chambers, d, are perforated, either by forming slits therein, or by making them with circular openings. c, o, c3. e, c., as shown in Figs. il, l and (L which latter construction l prefer in they construction of said chambers. The openings or perforations i'ormcd in the bottom of the chambers, d, ci. are designed to be just large enough to allow the free passage of the lume-black or other filtering media, and in constructing these chambers. and in order to secure the close joint which appears to be desirable, I prefer io plane or otherwise finish the lower side of each of the plates which forni the bottom ol' the chamber. Closely fitting under the bottom of each of the afin'esaid chambers. nl, d', is a planed or other finished perforated plate, r, whose perforations are `approximatcly the same as those formed in to them by any suitable means, for instance,

lll.r

by an eccentric, g, and suitable connection as shown in Fig. l.

The arrangement of the aforesaid plates and the essential object of their eiiiploy nient in this apparatus is to enable nie to provide a discharge in a regulated way for the filtering material, which material sifts through the perforations in the bottoni of the `distributing chambers, (l, ai', and

through plates, 1', r', in the t'oriii of a` shower of thin streams. The perforations in the aforesaid plates, fr, r', are designed to register with the perforations iii the bottom of the Chambers so that by a movement of the plates, fr, 9', in one direction, about onehalf of the perforations Will be in register with corresponding perforations in the bot; tom of the chambers and in the movement of the plates, r', r', in an opposite direction, the other half of their perforations will be in register with the perforations in the bottom of the chambers, whereby the filtering material will fall practically continuously through the perforations during the operationI of the apparatus.

Between each of the distributing chainbers, d, d', and the cooling portion, C, C', of the apparatus, I interpose the closed chambers, B,'B, which may be constructed of suitable metal and may be from four to six feet high, more or less, and have a width and length about equal to the distributing chambers, b, l5', and from which distributing chambers the bone-black, or other filtering material, is delivered to the cooling chambers in the form of many thin streams. The closed chambers, B, B', are what I will hereinafter refer to as the oxidizing or decarbonizing chambers and in the construetion shown, I have provided these chambers at one end and, itl desired, at the sides, with one or more air vents, i, It', i, fr?, &c., as shown in Figs. l, 2 and 5, which vents are situated, in practice, about one foot above the bottom of each of said chambers, each of the vents being about one foot wide and about six inches high, and each veut being provided with a sliding shutter, e, t", a, t, etc., for reventing the filtering material from flowing out in case it should aeeuniulate too high on top ot' the pipes, e, e', .with which the cooling chambers are provided, and which pipes are surrounded by :i enoling medium.

fn addition to the aforesaid vents, I provide each of the oxidizing eliaiiiliers :it a point near the top of the same, with an air vent, Z, Z', Figs. 1 and 2, and which vent is in turn connected with a flue which, in pruetice, may be Connected either' with a flue leading into a drier, or to a fan or other device, not shown, said flue being provided with a regulatingdamper, m. ,f

The cooling chambers, (l, C', consist of :t casing or shell in which the pines, C, c', ot

which there may be a large number, are arranged in upright position, with their upper ends communicating with the oxidizing chambers above, so that the filtering medium on leaving the oxidizing chambers passes f through the water cooled pipes and has its teiiiperature reduced to the desired extent. The .:oi'iling of the liltnring material ma)T be dono either by water, admitted through a suitable inlet, n, as shown in the drawing, in which ease the whole cooler` has to be inclosed, the cooling vVater entering continuously at the bottoni through an inlet pipe, n, the water thus entering the shell oi the cooling apparatus and surrounding the pipe and flowing out through the pipe, o, atthe top. Ii desired, the pipes may be cooled by air, either with or without forced dralft iii a manner well known iii this art.

At the bottoni oiV the cooling chambers are arranged other chambers, if, d, which are similar inconstruetitin and arrangement to the chambers, d, d', which underlie the retorts, a', a', u?, a, ete., and the lower ends ot' the ei'ioling pipes communicate with and deliver the liltering material into said ebanr bers, d, d3, the bottoni ol these chambers having pe'i'fr'irations similar to those foiiiied in the bottoni of the Vupper chambers, D, 7), and the chambers, d2, ola, haring a. close lit against perfiiuated and plaiied plates, fr, r, which aie slidably mounted in guides, f2, f, and each of said plates being designed to be moved to and fro by au eccentric, p, in substantially the saine manner as di'isei'ihed for the plates, r, r', whereby the discharge ol the cooled filtering material will be the saine as that being discharged from the distributing chambers, d, ai", above, said cooled ina4 terial being in turn lelivered directlyr into suitable hoppers, l), 1)', which underlie the cooling chambers and which preferably have downwardly converging wallsv und each hopper having an outlet controlled by a` suitable gate or valve, o, l'or regalatingv the discharge of the ie'viv'ilied bone-black or other (fooled filtering matr-rial, whirl niav finallyY be delivered Vroni the lioppers, l), ll', onto an endless traveling belt, or other ronveyer, E, said material being now iii rondition for re-ilse.

From the foregoing it will be readilyV understood that the operation of' il i appuratos described is sulstantiallv7 as follows: 'l`he boneblaifh or other lillei'inir material is heated. in the retol'ts, o, o', o, of'. itc.l or iii any other suitable vessels having nirftight connection with the distributing rliaiulurs, il', so that the i'ilol'ts, :La fwell :is the chambers, areia'lways filled` with material. Awhen treating bone-black its temperature `hould' be brought to about .lllu 1"., For niiuply revivilying, and to about i" lf. li' simultaner'iusly onu-hall to one per ifenl. ci' `carbon is to be removed. The tempora- Cri ' ture! is regulated by the lire inthe-iurnace,A

' "16g '-nd'this can' be ascertincdbynipyrometer inserted into the nali-@fthe oxidizing chamu l i `3. ,In cppcrctggg-fpr revivying, granular berf-B, orfbjf other s|;iil:lble tempierature-y l [Plate: 1", r3

lreted to the desiredtemperntdre, is by the bacl and forth nioremenbof theperforated 'tnuonsly inthe form of many thinstrcams iind in this condition' the innternil'. asses 4through the oxidizing chambers; bp. l', in

` vents, h, la, h2 etc.1 'sindt tie flue, m.

While fsillingthrough this draft of air in n shw'er, eV-'ery )article of the hot material will be hitby the nir,4 causing thereby the desired oxidi'zation of thehented impurities retained by the boneblaclr (mother material under treatment, und", also, of c certain amount of any excess ofczlrhon. The-boneblcck wshrill bc'allonfecl, `before the discharge from the coolers, C, C', into the hoppers, D, D', be fins, to accumulate bouts-ix inches ou top o the 'cooling pipes. As :ill of the pores of the hot particles of' bone-black have been filled with air, while fullingthrongh the draft of nir, the oxidizntion of the irnurities will he finished ii'hilc the hot honeiileclc is lying on top of the` cooling ipes. In this 'wny, nll of the impurities will be oxidized und carried olf in gaseous form by` the draft of cir leaving thereby the porcs intli.:rting means, n'otshmvn. 'The materiel chamber having: aiorcnnous bottom for discharging 'the filterj agent ffm said A chamberin shower-like crm;

filtering mittels the combination with means for heating :a mage of mw .tei-ich asubstcntiully airtight chamber into ca used tlfull practically nnof the bone-bllich always t'rcc, avoiding nny accumulation of carbon. which will occur with ordinary lciln work, clicking greatly the pores sind reducing greatly the clliciency of the bondblaclc.

Since the temperature of thc hone-block hns to be brought only to nlmnt 900 F. for revivi'fying, while with ordinary kiln work. it hns to be brought to about i209 F., und maintained at this tempernturc for at least half an hour, it is obvious that by the use of my apparatus, not. only the. pores of the filtering material will be kept nlwuys clcnn and highly efficient, but also the capacity of the kilns will he greatly increased, much fuel saved, and the life ot' thc rctorts luolongcd, owing to the mildncss of lient applied.

Haring thus described my invention flint l Clnim as new and desire to `sccnrc by Letters Potent is:w

l. ln nppnrntns for rcriril'yng grunnlur filtering inntcrinls. ihr; conrhnnliln with means for herdingY n moss of grzinnl-.lr inntcrnl. u, distanti-.illy :Jr-light rlnnnhcr into the i-.fwrril filtering ugual is delivered; said -lltering materials, the com which seid meter-'uil is fed 1n i'heated condition, menns for. dischar .material from Ysaid chamber 1n showering the heated streams, and means for s ject-ing the Astreamsof `heated discharging material to the action of sin` air current andl thereby oxidizing the contained impurities of said material.

4...In apparatus forrevivifg'ing granular nation with means for heating c muss of granular material, u substantie-ll),v air-tight chamber into which said material is fed in its heated condition, menus for dischargingL the heated material from said chamber in thin streams, and means for admitting an air current to the` falling strecms of heated material for the purpose of oxidizing impurities con tained therein.

5. In apparatus for rcvivif ing granular filtering materials, the com inaton with means for heating c muss of granular material, a substantiolly air-ti ht chamber into which said material is fed 1n its heated con dition, means for discharging the heated material yfrom scid chamber in thin streams, menus for admittin an nir current to the falling; streams of iieated materiel for the purpose of oxidizin impurities contained therein, and means or positively lowering the temperature of said material.

6. In apparatus for revivifying granular filtering materials, the combination with means for heating a mass of granular material, s. substantially oir-tight chamber into which scid material is fed 1n its heated condition2 meanefor discharging the heated material from said chamber in thin streams, means for admit-ti :in nir current to the falling streams of cated material for the purpose of oxidizing impurities contained therein, and o cooling chamber into which the heated material is discharged.

7. In apparatus for reviviying granular iltering mnterinls. the combination with means for heating a muss of granular nur tcrinl, a substantially :nir-tight chamber into which Suid rnntcrinl is fed in its heated Condition1 means for discharging tie heated material' from said clmmhcr in thin streams. :nouns for :nlinittinj: :in nir current to thc hailing streams nf heated imiter-inl for the purpose (il (midi/.ing impurities i'nnlnincil thcreinA and :l heut rchnngcr into which thc licntcfl innterinl is rllwhnrgcd.

"5. lr. appui-utilifnr rr\i\if`ving jginnnlur filtering materials. ille, ronihiniiiion with menne for heating :1 ninss of granular mnterial, a substantially air-tight chamber into which said material is fed in its heated condition, means for discharging the heated material from said chamber ln thin streams, means for admitting an air current to the falling streams of heated material for the purpose of oxidizing impurities contained therein, a cooler including pipes forming conductors for said4 material, and means for supplving a coolin fluid about said pipes.

9. n apparatus or revivifying granular filtering materials, the combination with a. retort kiln or vessel for heating boneblack or other iltcring media, of a chamber having air-tight connection with said retort or vessel, the bottom of said chamber bein perforated, a perforated slide arrange closely beneath the bottom of said chamber, and means for reciprocating said perforated slide relatively to the perforated bottom to permit the discharge of bone-black or filterin material in many thin streams throng said perforations.

l0. In apparatus for revirifying granular flteringmaterials, the combination with a retort kiln for heating bnne-blnclr or other tiltering 1ncdia,a chamber beneath and communicating with the lower end of the retort and havin an air-tight connection therewith, said c amber haring a perforated bottom, a perforated plate arranged closely under the bottom of said chamber and horizontal guides for the plate, und means for rcciprocating the plate whereby the rforations thereof are brought more or lpegs into and out of register with the perforations in the bottom of said chamber and ermitting the discharge of the bone-blac or other ltering media in many thin streams. 11. In apparatus for revivifying granular filtering materials, the combination with a retort kiln or vessel for heatin boneblack or other filtering media, of a amber having air-tight connection with said retort or vessel, the bottom of said chamber bein perforated, a perforated slide arran closely beneath the bottom of said cham means for reciprocating said rforated slide relatively to the perforated permit the discharge of the bone-black or other filtering material in man thin streams through said perforations, a. c osed chamber into which the heated filtering material is permitted to fall, said chamber having vents for maintaining a draft of air through the chamber in contact with the falling material and thereb causing the oxidizetion of impurities ta en up by the filtering material and also an excess of carbon accumulated in said fi tering material, and a cooling chamber connecting with said second-named chamber and into which the oxidized material is delivered.

In testimony whereof I affix my signature.

MORIZ WEINRICH.

air-

It is hereby certified that in LettorsvPatent No. 1,184,398, granted May 23,

1916, upon the application of Moriz Weinrich, of New York, N. Y., for an improve mentin Apparatus for Reviviiying and for Decarbonizing Bone-Black and other Filtering Merlin, :in error appr-.nrs in the printed specification requiring correction us follows: Page 1, lino 53, for the word "iny rend any; and that tho said Letters Patent should bo road with this corroction therein that tho sumo may conform to the record of tho case in tho Patent Office.

Signed und sealed this 20th day of June, A. D., 1916.

J. T. NEWTON,

Acting Commissioner of Patents.

[SEAL] 

